<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title></title>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<meta http-equiv="Content-Style-Type" content="text/css">
<style type="text/css"><!--
body {
margin: 5px 5px 5px 5px;
background-color: #ffffff;
}
/* ========== Text Styles ========== */
hr { color: #000000}
body, table /* Normal text */
{
font-size: 9pt;
font-family: 'Courier New';
font-style: normal;
font-weight: normal;
color: #000000;
text-decoration: none;
}
span.rvts1 /* Heading */
{
font-size: 10pt;
font-family: 'Arial';
font-weight: bold;
color: #0000ff;
}
span.rvts2 /* Subheading */
{
font-size: 10pt;
font-family: 'Arial';
font-weight: bold;
color: #000080;
}
span.rvts3 /* Keywords */
{
font-size: 10pt;
font-family: 'Arial';
font-style: italic;
color: #800000;
}
a.rvts4, span.rvts4 /* Jump 1 */
{
font-size: 10pt;
font-family: 'Arial';
color: #008000;
text-decoration: underline;
}
a.rvts5, span.rvts5 /* Jump 2 */
{
font-size: 10pt;
font-family: 'Arial';
color: #008000;
text-decoration: underline;
}
span.rvts6
{
font-weight: bold;
color: #800000;
}
a.rvts7, span.rvts7
{
color: #0000ff;
text-decoration: underline;
}
/* ========== Para Styles ========== */
p,ul,ol /* Paragraph Style */
{
text-align: left;
text-indent: 0px;
padding: 0px 0px 0px 0px;
margin: 0px 0px 0px 0px;
}
.rvps1 /* Centered */
{
text-align: center;
}
--></style>
</head>
<body>
<p>Hallo Henning,</p>
<p><br></p>
<p>Freitag, 8. August 2008, meintest Du:</p>
<p><br></p>
<p><span class=rvts6>HF> Hi everybody,</span></p>
<p><br></p>
<p><span class=rvts6><br></span></p>
<p><span class=rvts6>HF> One needs basically a daemon which handles copying requests and establishes</span></p>
<p><span class=rvts6>HF> the connection to next node in the chain.</span></p>
<p><br></p>
<p>Why a daemon? Just MPI that starts up the processes on the remote nodes during programm startup. Advantage is that you can use any high-speed-interconnect which you have an MPI for. </p>
<p><br></p>
<p><span class=rvts6>HF> Has somebody written such a tool?</span></p>
<p><br></p>
<p>I wrote a tool in Java in 2004 or 2005 during an internship for IBM at the IPK in Gatersleben that implemented your strategy. Worked good but had some flaws since i was using some Java specific remote procedure calls and daemons. Implementing it with C/C++ and MPI can't take more than a couple of hours and should be easy to do. </p>
<p><br></p>
<p>You could use tar and pipe the datastream to copy whole directories without worrying to much about file attributes. I always wanted to implement it myself but i can't find time with my current job :-(</p>
<p><br></p>
<p>Could be a good project for a student to do.</p>
<p><br></p>
<p>Regards,</p>
<p>Jan</p>
</body></html>